Nor2-io heim-mcp new_heim_application tools.ts registerTools os command injection

published 2026-04-05 7 mo ago modified 2026-07-24 3 mo ago also GHSA-wx4p-jr66-jfp9 , EUVD-2026-19134

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits: 0; none known

A vulnerability was determined in Nor2-io heim-mcp up to 0.1.3. Impacted is the function registerTools of the file src/tools.ts of the component new_heim_application/deploy_heim_application/deploy_heim_application_to_cloud. This manipulation causes os command injection. The attack requires local access. The exploit has been publicly disclosed and may be utilized. Patch name: c321d8af25f77668781e6ccb43a1336f9185df37. It is suggested to install a patch to address this issue. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Patch / fix

links 2

github.com/Nor2-io/heim-mcp@c321d8a commit
github.com/Nor2-io/heim-mcp#2 pull request

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 7 mo ago (2026-04-06)

Exploit prediction

0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/user-attachments/files/25889482/heim-mcp_bug.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	4.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CNA	3.1	5.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CNA	3.0	5.3	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CNA	2.0	4.3	AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C
CNA	4.0	1.9	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	5.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA	2.0	4.3	AV:L/AC:L/Au:S/C:P/I:P/A:P
GitHub	3.1	5.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected packages

ecosystem	package	affected	fixed in
npm	@nor2/heim-mcp	<=0.1.3	no fix listed

Affected products

Nor2-io heim-mcp

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command
CWE-77 Improper Neutralization of Special Elements used in a Command

References

github.com /Nor2-io/heim-mcp/pull/2
issue-tracking, patch, web
github.com /Nor2-io/heim-mcp/commit/c321d8af25f77668781e6ccb43a1336f9185df37
patch, web
github.com /user-attachments/files/25889482/heim-mcp_bug.pdf
exploit, web
vuldb.com /vuln/355394
vdb-entry, technical-description, web
vuldb.com /vuln/355394/cti
signature, permissions-required, web
vuldb.com /submit/784862
third-party-advisory, web
github.com /Nor2-io/heim-mcp/issues/1
issue-tracking, web
github.com /Nor2-io/heim-mcp/
product
nvd.nist.gov /vuln/detail/CVE-2026-5602
advisory
github.com /Nor2-io/heim-mcp
package

Sources

CVE List CVE-2026-5602
GitHub Advisory GHSA-wx4p-jr66-jfp9
NVD CVE-2026-5602

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary